Question

Heyyaa Dude !!

Write A Short Note on Heart ! ♥️

Thanks Dudee !! ​

Answer 1

Heya mate...

hope this helps✌️✌️

Heart is a very important part of a human or an animal.. For now let's talk about human heart..

Human heart is about our fist size. It is located in the the center left near the lungs. Rib cage protect our heart. Heart helps in purification of blood and also it's supplication. It is a very delicate part of a human body. It has 4 Chambers : Left auricle and right auricle, left ventricle and right ventricle.

The blood from all parts of the body enter the heart in the right auricle and then go to lungs to get oxygenated through right ventricle. The oxygenated blood enters the left auricle from the lungs and enters the veins through left ventricle.

Hope this helps...

plz mark as brainliest ❤️❤️☺️✌️

Answer 2

$\huge\bold\red{Heart}$

➡️It is a conical muscular structure that brings about circulation in the body

➡️The broader base is upward and the narrow pointed appex is downward

➡️It lies in the thoracic cavity between the two lungs

➡️Reddish brown in color

➡️Size:-

✒️12 cm in length and 9 cm in breadth

➡️ Weight:-

✒️300 g in case of males and 250 g in case of females

➡️Lined by a narrow fluid filled sack , called pericardium

➡️It helps in frictionless expansion and contraction of heart

$\orange{Internal \: Structure \: Of \: Heart} \:$

➡️It is completely divided into left and right side by a longitudinal partition wall called the septum

➡️It prevents the mixing of oxygenated and deoxygenated blood

$\pink{Chambers \: Of \: Heart} \:$

➡️There are four Chambers of the heart

➡️The upper chamber of the heart are small and have thin walled called $\bold{atrium}$

➡️The lower Chambers are large and thick walled called $\bold{ventricles}$

$\purple{Wall \: Of \: Heart}$

➡️The wall of heart is thin in $\bold{auricle}$ , thick in $\bold{ventricle}$ , and thickest in the $\bold{left \: ventricle}$

➡️This is because the $\bold{ventricles}$ have to push the blood throughout the body

➡️So, it has to apply the maximum pressure

➡️In order to withstand the pressure, the wall becomes thick

$\blue{Blood \: Vessels \: Of \: The \: Heart}$

$\bold{1) Right \: Atrium}$

$\bold{2) Superior \:Vena \:cava}$

$\bold{3) Inferior \: Vena\:cava}$

Left atrium → Pulmonary vein

Right Ventricle → Pulmonary Artery

Left Ventricle → Aorta

$\green{Valves \: Of \: The \: Heart}$

➡️The opening between right atrium and right ventricle is guarded by $\bold{tricuspid \:valve}$

➡️The opening between left Atrium and left ventricle is guarded by $\bold{Bicuspid \:Valve}$

➡️The right Ventricle opens into Pulmonary Artery and this opening is guarded by $\bold{Semilunar \:Pulmonary \: valve}$

➡️The left ventricle opens into $\bold{Aorta}$, and this opening is guarded by $\bold{Semilunar\: Aortic\: Pump}$